amer, r. (1966). theory of interpolation. the institute of national planning.
Čikaški stil citiranja (17. izdanje)amer, roshdy. Theory of Interpolation. cairo: the institute of national planning, 1966.
MLA način citiranja (9. izdanje)amer, roshdy. Theory of Interpolation. the institute of national planning, 1966.
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